Mathematics High School

-x+y = 5
x - 5y = -9
Solve by elimination
Y and x

Answers

Answer 1

Answer:

x = -4 and y = 1

Step-by-step explanation:

-x + y = 5

+ x - 5y = -9 <— let’s eliminate x

————————————-

-4y = -4

y = 1

x - 5y = -9 <— substitute for y

x - 5(1) = -9

x - 5 = -9

+5 = +5

x = -4

Related Questions

Find the value of x.

Answers

Answer:

        x = 4  

Step-by-step explanation:

DE║AC  ⇒   From Thales:  [tex]\dfrac{BD}{BE}=\dfrac{DA}{EC}[/tex]

Therefore:

                 [tex]\dfrac{10-x}{3}=\dfrac{x}2\\\\2(10-x)=3x\\\\20-2x=3x\\\\20=5x\\\\x=4[/tex]

For what value of x do the expressions
2x+3 and 3x +1 have the same value?

Answers

Set the expressions equal to each other:
2x + 3 = 3x + 1
x = 2

Graph this function using intercepts:

4x - 5y = 40 ​

Answers

use photomath for that that's way easier

i think this is how you do it

Find the slope and y-intercept of the line in the graph:

Answers

2 i believe i’m pretty sure

Answer:

Slope: -2/3

Y-intercept: 2

its the pythagorem theorem

Answers

The answer is approximately 16 inches. I attached the work below :) (if this helped u can u give brainlist)

pls answer quickly and right for 17 points

Answers

Answer:

lol it's only 9 points

Step-by-step explanation:

4 + 6 (3) + 2(5 1/2 - 1)

Answers

4+6(3)+2(5.5-1)
4+18+9
=31

Select the solution(s) of log2x=1−log(x+4).

Answers

Step-by-step explanation:

log2x = 1 - log(x+4)

log2x = log10 - log(x+4)

log2x = log[10/(x+4)]

2x = 10/(x+4)

2x(x+4) = 10

2x² + 8x - 10 = 0

÷2 both sides of equation

x² + 4x - 5 = 0

(x+5)(x-1) = 0

x = -5, 1

x isn't be -5 because logA, A need to be > 0

So, x value is 1

‼️‼️Pls Pls help, this is due soon and I will give brainliest to first correct answer‼️‼️

Which problem will graph as shown
A) -17 < 3 - 5x
B) 17 > 3 - 5x
C) 17 ≥ 3 - 5x
D) 17 ≤ 3 - 5x

Answers

Answer:

where is the graph? i need a graph, otherwise id love to help you!

Step-by-step explanation:

[Help Asap] For each ordered pair, determine whether it is a solution to the system of equations.

Answers

Answer:

(-4,-4)

Step-by-step explanation:

6x - 7y = 4

6(-4) - 7(-4) = 4

-24 + 28 = 4

4 = 4 This is correct to the first equation.

Now let us try the second equation.

-5x + 3y = 8

-5(-4) + 3(-4) = 8

20 - 12 = 8

8 = 8 This is also correct to the second equation.

Hope this helps, thank you !!

Which Proportion is correct?

Answers

Answer:

sorry but i need the points <3

Step-by-step explanation:

Pleasee helpp answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

x = 132º

Step-by-step explanation:

the sum of two angles on the same side is 180º so...

x + 48º = 180º            subtract 48º from both sides

x = 132º

6x-2y=4
I need to solve the question and then graph it. Help?​

Answers

Answer: if you want me to solve x here if you want me to solve y here, look at the picture

Step-by-step explanation: hope this help

I dont even know how to solve this lol, need help and work shown

Answers

Answer:

-6

Step-by-step explanation:

-7 + 2(5) - (12÷4)²

-7 + 10 - 3²

-7 + 10 - 9

3 - 9

-6

Olivia has a points card for a movie theater. She receives 25 rewards points just for signing up. She earns 7.5 points for each visit to the movie theater. She needs 130 points for a free movie ticket. How many visits must Olivia make to earn a free movie ticket?

Answers

Answer:

14

Step-by-step explanation:

7.5x + 25 = 130

         -25    -25

7.5x = 105  

[tex]\frac{7.5x}{7.5}=\frac{105}{7.5}[/tex]

x = 14

Hence, she must make 14 visits in order to earn a free movie ticket.

I would love some help :)

Answers

4x+6=3x+10 so x=4, to find the measure of KJL, plug in x into the equation 4x+6. angle KJL=22°

I urgently need help!!!!

Answers

Answer:

No

Step-by-step explanation:

Hypotenuse-leg is for right triangles, which these aren't.

Find the geometric mean of the numbers. If necessary, give the answer in simplest radical form.

1.5 and 20

The geometric mean is .

Answers

its the square root of 1.5*20 which is root 30

I need help can y’all please help me

Answers

The answer for the perimeter is C. 102.61

Ms. Bohan has 4 1/2 bags of takis that she wants to split between her 3 nieces. What fraction of the takis will each niece get? 

 a

6/9 of the takis

 b

3 1/2 of the takis

 c

9/6 -or- 1 1/2 of the takis

 d

27/2 -or- 13 1/2 of the takis

​

Answers

C is the correct answer when you divide 4.5 by 3

I need help with this

Answers

8/9 divided by 2/3 is 1 1/3

PLS HELP ASAP



6x - 8 = 40 pls evaluate

Answers

Answer:

X = 8

Step-by-step explanation:

6 x 8 = 48 - 8 = 40 so 8 is your answer

solve the inequality G-13<19

Answers

Answer:

The answer is G < 32

Step-by-step explanation:

G - 13 < 19

(Move numbers to on side)

G - 13 + 13 < 19 + 13

(Simplify)

G < 32

I hope this helps :)

Which of the following inequalities is the solution to the number line?

Answers

Answer:

A

Step-by-step explanation:

- 5x + 4 > 9 ( subtract 4 from both sides )

- 5x > 5

Divide both sides by - 5, reversing the symbol as a result of dividing by a negative quantity.

x < - 1

Which is represented by the given number line

Plz help tysm and thx

Answers

The 3rd bubble is the answer

The Hu family gose put for lunch and the piece of the meal is $56 the sales take on the meal is 7% and the family also leave a 20% tip on the pre tax amount what is the total cost of their meal

Answers

Answer:

$56 x ( 7% + 20% ) = $15.12 => $56 + $ 15.12 = $71.12

Step-by-step explanation:

A plant is already 54 centimeters tall, and it will grow one centimeter every month. The plant's height, H (in centimeters), after M months is given by the following.
What is the plant's height after 13 months?

Answers

Answer:

67 cm

Step-by-step explanation:

We are given the initial height of the plant let's call it H.

H = 54 cm. This is the original height of the plant at M(months) = 0.

We are given that it grows at 1 cm/month. This is the rate of growth.

Rate = 1

Time (M) is given in Months.

So when M = 0, H = 54

Let's say M = 1, That is one month has passed. In this time the plant's height would have increased by 1 cm. So our plant's height would be H = 54+1 = 55 cm.

When Two months have passed our plant's height would be H = 54 + 2 = 56 cm , since every month our plant gains 1 cm in Height, we can make a fuction for this.

H = 1M + 54.

Now we just plug in 13 for M, to get 13 months.

H = 13 + 54

H = 67 cm

So our plant would be 67 cm in height after 13 months.

Simplify the expression.
3.4m + 9 - 2.4m =blank

Answers

Answer:

m+9

Step-by-step explanation:

I need help please please

Answers

Answer:

the right answer is three ok your welcome

Answer:

It is option 4

what is...
4 times 8 and add that to 5.6*4/2 +4.5*4/2 plus four times eight

Answers

Answer:

52.2

Step-by-step explanation:

I got 449.6 I have no clue if that’s correct tho
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